FOR SALE. «-- 
A ZENTMAYER PORTABLE MICROSCOPE, 
IN PERFECT ORDER, 
For 3100.00. - - - Catalogue Price, $147.50 
Including THREE OBJECTIVES, 14 in., } in., and } in. 
Also an Abbé Condenser, Glass Stage, and Neat Walnut Case. 
Address the Editors of the Bulletin, or Wm. Wales, Fort Lee, N. J. . 4 
CHARACEA OF AMERICA. 
The first fascicle of the Second Part of the Characeze of America 1s 
now ready. It contains descriptions of eight species of Nitella, as fol- 
lows: JVitella opaca, Ag.; obtusa, Allen; montana, Allen; Blankin- 
shipit, Allen; Missouriensis, Allen; flexilis, Ag.; subglomerata, A. Br. ; 
glomerulifera, A. Br., with fourteen full-page illustrations (eight litho- 
graphic plates and six photogravures). These fascicles will be issued 
from time to time as plates can be prepared; price of each part $1, the 
actual cost, if the whole edition of 500 copies be sold. Address 
rE. ALLEN, 
10 East 36th St., N. ¥- 
LICHENES BOREAL] AMERICANI. 
Second edition of Decades of N. Am. Lichens. 
PREPARED BY 
Ciara E, Cumminecs, Tuos. A. WILLIAMS AND A. B, SEYMOUR. 
Numbers 1-80 ready in May. This second edition is prepared in response pee 
gent requests, the subscription list of the first being full. The second will ree 
nothing not in the first. The editors are glad to announce that Prof. Thos. A. de 
liams will hereafter be one of their number. His name will appear with the first 
tion also after No. 150. Address . 
CLARA E. CUMMINGS, 
WELLESLEY COLLEGE, WELLESLEY, MASS. 
